Marin Mersenne 2^P-1
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GIMPS
Finding World Record Primes Since 1996

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Exponent Range:










MnStatusDetails
63166921Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 275
TF target 274
P-1
B1 = 695000
B2 = 17375000
LL
StatusDateUserResidueShift
Verified2014-06-11kamilsteDB49BBB66096256C62450454
Verified2023-02-07belezbarDB49BBB66096256C32785384
History
DateUserTypeResult
2024-05-31LaurVNF
no factor from 2^70 to 2^71
2023-02-07belezbarC-LL
DB49BBB66096256C
2019-11-25Mark RoseNF
no factor from 2^74 to 2^75
2016-10-21John BurroughsNF-PM1
B1=695000, B2=17375000, E=12
2016-02-23Mark RoseNF
no factor from 2^59 to 2^63
2014-06-11kamilsteC-LL
DB49BBB66096256C
2013-05-30SaraNF-PM1
B1=525000, B2=6825000
2013-05-15Tom DuellNF
no factor from 2^73 to 2^74
2013-05-15Tom DuellNF
no factor from 2^72 to 2^73
2013-05-15Tom DuellNF
no factor from 2^71 to 2^72
2013-04-22Carsten KossendeyNF
no factor from 2^70 to 2^71
2012-08-26nate.andersNF
no factor from 2^69 to 2^70
2010-04-01GrunwalderGIMPNF
no factor from 2^68 to 2^69
2009-11-21-Anonymous-NF
no factor from 2^67 to 2^68
2009-09-03unconnectedNF
no factor from 2^66 to 2^67
2009-09-02HazmattomNF
no factor from 2^65 to 2^66
2009-09-01HazmattomNF
no factor from 2^64 to 2^65
2009-02-14Wojciech FlorekNF
no factor from 2^63 to 2^64